Writing to same file from two threads

[Paul Rubin]

jt at toerring.de (Jens Thoms Toerring) writes:
> in garbled output (i.e. having some output from A inside a
> line written by B or vice versae) because the "main thread" or

Yes they do get garbled like that.  Preferred Python style is put a
single thread in charge of all the i/o to that file, and communicate
with it by message passing through Queue objects.  That is safer than
directly using locks.